the prime minister of new zealand, john key wrote, mr. mandela was a force for change not only in south africa, but around the world. reacting tonight, muhammad ali wrote, his was a spirit born free. destined to soar above the rainbows. today his spirit is soaring through the heavens. he is now forever free. new york's cardinal dolan wrote, nelson mandela was a hero to the world. his bravery in defending human rights against the great evil of apartheid made him a symbol of courage and dignity as well as an inspiration to people everywhere. and mandela's great friend, archbishop foundation wrote in his name his fearless generosity and leadership were in the service of transcending our differences by seeking our oneness as human beings. and here's the "new york" magazine cover, a tribute to the young mandela, young freedom fighter. tonight, bono, mandela's great supporter and friend wrote, in the end, nelson mandela showed us how to love rather than hate, not because he never surrendered to rage or violence but because he learned love would do a better job. >> andrea mitchell in our d.c.